As sun-grazing comet ISON approaches the sun, it's getting progressively brighter – and might even flare into a dazzling object bright enough to be visible in broad daylight.
NASA Hubble telescope / Courtesy of NASA / Reuters
An exceptional comet flying ever closer to the sun may offer an amazing naked eye sight to Earth dwellers this fall as it gradually brightens.
As comet C/2012 S1 (ISON) continues to approach the sun, it is slowly responding to the increasing warmth of the sun and getting progressively brighter. The comet is getting considerable scrutiny from both amateur and professional scientists because it's a rare sungrazing comet, destined to approach to within 730,000 miles (1.17 million kilometers) of the surface of the sun on Nov. 28. Because of this extremely close approach, comet ISON holds the "potential" to flare into a dazzling object — possibly becoming bright enough to be briefly glimpsed in broad daylight.
Still, at this early stage in the comet's development, we can't be sure if this will actually happen.
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